The best free alternative to PaintTool SAI is Krita, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to PaintTool SAI and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to PaintTool SAI are Affinity, Photopea, PhotoSplice and MyPaint.
Free, open-source painting software designed by artists for artists. Offers customizable UI, 9 brush engines, color management, tablet support, non-destructive editing, and privacy features. Portable and available on major platforms, supporting seamless texture creation.
Netherlands
EU
Unified design solution merging advanced photo, vector, and layout tools for seamless workflow, non-destructive editing, RAW support, batch processing, AI enhancements, GPU acceleration, file compatibility, cloud asset integration, and tailored workspace options.
Australia
Browser-based image editing supports PSD, XCF, Sketch formats, advanced layers, vector tools, RAW photo support, and exports in 40+ formats. Fully client-side with AI background removal, content-aware tools, and privacy as files never leave your device.
CzechiaEU
Offline raster and vector editor with PSD/PSB support, layer groups, clipping and layer masks, layer styles, smart objects and smart filters. It includes drawing, retouching and path tools, advanced text layout, action playback, scripts, sidebar plugins, and file dialogs.
United Kingdom
MyPaint is a fast, distraction-free, and easy painting tool for digital artists. It supports graphics tablets made by Wacom, and many similar devices.
Switzerland
FireAlpaca is the image editor that can be used readily and easily. We made it possible to provide the completely free download, in order for our products to be experienced by more users from all over the world. It is available for both Mac and Windows users!
MediBang Paint is a lightweight software for illustration and making comic books on Windows and Mac OS.
Japan
MS Paint for the Mac. Native, free and open source: blank canvas at any size, drop one image onto another, crop, and mark up screenshots.
United States
ibis Paint is an easy yet powerful drawing app made with tools for sketching manga right at your fingertips.
Japan
AzPainter is a full color painting program for Linux. It's a lightweight tool with tablet pressure support, and provides basic functions such as selection, layers, filters. you can use it for painting, image editing, or pixel art making.
Japan
Open source image editor with non-destructive editing, 110+ filters, adjustment and text layers, support for smart objects and adjustment layers, cross-platform compatibility, and layer-based editing for flexible image composition.
HungaryEU
China
